It was reported on Monday that Denver Broncos star linebacker Von Miller is facing a four-game suspension for violating the NFL’s drug policy. As LBS writer Steve DelVecchio pointed out, there is no word yet about what type of violation Miller committed; the drug could be of the performance-enhancing or recreational variety.

Because Miller is facing a four-game suspension, the thinking is that the violation is for a performance-enhancer since those result in lengthier suspensions. But that might not necessarily be the case with Miller.

Mike Klis of The Denver Post reports that Miller tested positive for amphetamines and marijuana in 2011, his rookie season. Klis says the penalty for a second violation of recreational drug use is four games.

The Broncos have said they are aware of the report but unable to comment on it. Vonn responded with this tweet:

Seeing reports abt 4 game susp. I know I did nothing wrong. I'm sure this'll be resolved fairly. Disapp. Broncos have 2 open camp like this.